Improvement in photograph-burnishers



W. G. ENTREKIN.

Photograph-Burnisher.

N0.163.%70. wy/11,1815.

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UNITED STATES PATENT OFFICE,

IVILLIAM G. ENTREKIN, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT lN PHOTOGRAPH-BURNISHERS.

Specification forming partof Letters Patent No. 163.170, dated May 11,1875 application filed April 24, 1875.

To all whom it may concern:

Be it known that 1, WILLIAM G. ENTRE- KIN, of Philadelphia,Pennsylvania, have invented an Improvement in PhotographicBurnishing-Machines, of which the following is a specification Myinvention relates to an improvement in the photograph burnishing-machinefor which Letters Patent were granted to me on the 2d day of December,1873; and the object of my improven'ient is to give a more variedmovement to the burnisher than in the said pat ented machine, therebyincreasing the burnishing effect on the photograph.

This object I attain in the manner which I will now proceed to describe,reference being had to the accompanyingdrawing, in which- Figure l is avertical longitudinal section of a burnishing-machine with myimprovements; Fig. 2, a plan view; and Fig. 3, a detached view of partof the machine.

A is the base of the machine, and to this base are secured the twostandards B and B, in the upper ends of which are the bearings for thejournals of the roughened or drawiiled roller 1). E is an arm, to which,near the front end, is fitted the burnishing-bar a, between two flanges,b and I), one of which may be removable and adjustable, as described inmy said Letters Patent. The rear end 0 of the burnisher-arm passesthrough and is guided by the forked top of the standard H, a pin, a",passing through the standard and through an elongated slot, 0, in thearm, so that the latter can be reciprocated longitudinally in thedirection of the arrows 2 2. At the same time the end 0 of the saidburnisher-arm is so loose laterally in the said standard that the armcan be laterally vibrated in the direction of the arrows l 1. Theconnection of the arm E with the standard H is also such that the outerend of the arm can be raised or permit-ted to fall by the wedge-shapedends w of the yoke W, the said ends being interposed between projectionsg on the standards 13 and B, and projections on the under side of thearm E. The yoke is made adjustable by means of a screw 3 which passesthrough the standard H.

The above device for adjusting the burnisher to or from the roughenedroller is too fully described in my aforesaid patent to need more minuteexplanation.

I prefer to impart the combined longitudinally-reeiprocating andlaterally reciprocating or vibrating movement to the burnisher-arm inthe following manner: At one end of the roughened roller is cut ascroll-groove, m, the bottom of which is made eccentric in respect tothe center of rotation of the roller.

The forked upper end-of a stud, n, attached to the arm E, embraces theeccentric portion q of the roller and fits within the scroll-groove, theopposite sides of which will, as the roller is turned, vibrate the arm Elaterally through the medium of the stud in the direction of the arrows1 1, while the eccentric portion 1 of the roller will, through the samemedium, reciprocate the burnisher loi'igitudinally in the direction ofthe arrows 2 2.

It will thus be seen that as the photographcard, under the control ofthe roller, is drawn by the same over the face of the burnisher a, thelatter having the within-described compound movement will have a betterburnishin g effect on the face of the picture than if the burnisher hadan oscillating movement only as in my said patent.

I claim as my invention 1. The burnisher a, combined with the roughenedfeed-roller D, and with appliances for imparting both a lateral and alongitudinal reciprocating movement to the bnrnisher, substantially asset forth.

2. The combination of the scroll-groove m, of the roller D and eccentricportion q of the same with the forked stud 12, attached to theburnisher-arm E, all substantially as set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses.

WILLIAM G. ENTBEKIN.

Witnesses JAMES BRAMBLE, Jr., HARRY SMITH.

